Problem in displaying image in TreeTable

Hi,

As per the requirement of my project, I need to display image in one column of TreeTable. Image should come from Internet.

I have created CellRenderer for that column and displaying image using img tag of html and image display in each cell. But, problem is that I am not able to view image properly in TreeTable as height of row is not increasing according to the height of image.

So, how can i increase height of row so I can view image properly. Or suggest some other way to get rid of this issue and achieve requirement.